<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
  <meta charset="UTF-8">
  <title>首页</title>
  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css">
</head>
<body>
<div class="container mt-5">
  <h1 class="text-primary" th:text="${message}"></h1>
  <p>这是首页内容</p>
  <a href="/about" class="btn btn-secondary">前往关于页面</a>
</div>
<div class="container mt-5">
  <p>这是发票打印功能</p>
  <a href="/upload" class="btn btn-secondary">前往发票打印下载页面</a>
</div>
</body>
</html>
